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I have an enterprise application running on multiple concurrent Liberty instances on IBM Cloud. I want to use JPA Cache Coordination to ensure that an entity is automatically invalidated in the cache on all other instances, if it is modified on any instance.

EclipseLink offers this capability (https://wiki.eclipse.org/EclipseLink/Examples/JPA/CacheCoordination) - but I haven't been able to locate any information on how to properly configure it on IBM Cloud.

Any hints or examples would be greatly appreciated

danishrulez
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  • The docs show 3 options - RMI, JMS and JGROUPS. I'd recommend the later 2 options, but you would need to look at IBM docs for how to setup a JMS or JGROUPS for use by EclipseLink. Someone posted their settings for MQ at https://www.eclipse.org/forums/index.php?t=msg&th=805994&goto=1417383& – Chris Mar 06 '18 at 17:00
  • JGroups doesn't seem to be included in the EclipseLink provided by Liberty: Internal Exception: Exception [EclipseLink-28006] (Eclipse Persistence Services - 2.6.5.WAS-v20171031-22b68cc): org.eclipse.persistence.exceptions.EntityManagerSetupException Exception Description: ClassNotFound: [org.eclipse.persistence.sessions.coordination.jgroups.JGroupsTransportManager] specified in [eclipselink.cache.coordination.protocol] property. – danishrulez Mar 06 '18 at 20:53
  • see https://www.eclipse.org/forums/index.php/t/1069341/ as you may have to pull in the extensions. – Chris Mar 06 '18 at 23:11

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